Funding for this research was provided by:
Australian Research Council (DP190100304 DP210102406)
Received: 25 August 2021
Accepted: 6 December 2021
First Online: 7 January 2022
: Glands from euthanised captive specimens were obtained under University of Melbourne Animal Ethics Approval UM0706247-2005 and University of Queensland Animal Ethics Approval 2021/AE000075.A <i>Pseudocerastes urarachnoides</i> tissue sample was provided by PG and BF under Iranian approval NIMAD # 942485.
: Not applicable
: The authors declare that they have no competing interests.